<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script src="vue.js"></script>
  </head>
  <body>
    <div id="app">
      <input type="text" v-model="message" />
      {{message}}
    </div>
  </body>
  <script>
    new new Vue({
      el: "#app",
      data() {
        return {
          message: "hello vue",
        };
      },
    })();
  </script>
</html>
